JP2008225249A - Droplet discharge device and control method of droplet discharge device, manufacturing method of electro-optical device, electro-optical device and electronic equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a droplet discharge device and the like, capable of facing a work immediately after drawing processing to perform mixed color inspection. <P>SOLUTION: The droplet discharge device includes a drawing means 14 of drawing on the work W by colors by discharging function droplets from a plurality of inkjet type function droplet discharge heads 30, while moving the plurality of droplet discharge heads 30 containing function liquids of different colors; a work stage 10 where the work is set, and a mixed color inspecting means 15 of facing the work, immediately after the drawing set on the work stage 10 to inspect a mixed color of an image drawn on the work W. <P>COPYRIGHT: (C)2008,JPO&amp;INPIT

Description

  The present invention relates to a droplet discharge device that performs drawing by color using a plurality of functional droplet discharge heads into which functional liquids of different colors are introduced to a work, a method for controlling the droplet discharge device, and manufacture of an electro-optical device The present invention relates to a method, an electro-optical device, and an electronic apparatus.

Conventionally, as this type of droplet ejection device, R, G, and B three-color functional liquids are ejected onto a workpiece by a plurality of functional droplet ejection heads into which R, G, and B three-color functional liquids are introduced. A device that draws pixels of a color filter or an organic EL device is known (see, for example, Patent Document 1). This droplet discharge device is equipped with a plurality of functional droplet discharge heads, a Y-axis table that moves the functional droplet discharge heads in the Y-axis direction (sub-scanning direction), and a workpiece that is a substrate. An X-axis table that is moved in the main scanning direction), and repeating main scanning by the X-axis table and sub-scanning by the Y-axis table while discharging the functional liquid by a plurality of functional liquid droplet discharge heads. Color drawing such as a stripe pattern is performed on the work. Then, after performing such color drawing, as a subsequent process, the functional liquid in each pixel is put in a furnace and dried to form a film forming portion in each pixel.
JP 2006-76067 A

  In such a conventional droplet discharge device, a color mixture (including color unevenness) is manually inspected at a stage where a series of drawing processes are performed and a film forming unit is formed by drying. That is, the color mixture inspection is performed in the post-process of the drawing process. For this reason, even if a malfunction occurs in, for example, the functional liquid droplet ejection head due to a maintenance defect or the like, this is noticed when the malfunction is discovered by the color mixture inspection. In this case, when a malfunction is noticed, drawing processing for several workpieces has been completed, which has been a cause of yield deterioration in the workpiece processing.

  The present invention provides a droplet discharge device and a method for controlling the droplet discharge device capable of performing a mixed color inspection on a work immediately after a drawing process, a method for manufacturing an electro-optical device, an electro-optical device, and an electronic apparatus The challenge is to do.

  The liquid droplet ejection apparatus according to the present invention moves a plurality of functional liquid droplet ejection heads from a plurality of functional liquid droplet ejection heads in the main scanning direction while moving a plurality of ink jet type functional liquid droplet ejection heads in the main scanning direction. Color mixing inspection that inspects the color mixture of the image drawn on the work by drawing the droplets and drawing by color, the work stage on which the work is set, and the work immediately after drawing set on the work stage Means.

  According to this configuration, the color mixing inspection unit is set on the work stage and inspects the mixed color at the work immediately after drawing drawn by the drawing unit, so that the work is inspected before the material is removed from the work stage. Can do. That is, the color mixture inspection can be performed before drawing on the next workpiece. For this reason, measures such as maintenance on the functional liquid droplet ejection head can be implemented at the stage where a drawing defect is found by inspection, and the number of workpieces with drawing defects can be minimized. Thereby, the yield in work processing can be improved as a whole.

  In this case, the color mixing inspection unit preferably includes an inspection camera that inspects the color mixture of the image while imaging the workpiece in the main scanning direction, and a camera moving unit that moves the inspection camera in the main scanning direction. .

  According to this configuration, since the inspection camera is moved in the main scanning direction by the camera moving means to perform image recognition of the workpiece, a small number of inspection cameras that can be imaged in the camera field of view in the sub-scanning direction, In addition, the mixed color inspection of the workpiece can be performed in a short time. In addition, it is preferable to use one inspection camera as much as possible.

  In this case, it is preferable that the movement trajectory by the camera moving means and the inspection camera is located outside the movement trajectory by the drawing means including a plurality of functional liquid droplet ejection heads when viewed from the workpiece.

  According to this configuration, since the movement trajectory by the camera moving means and the inspection camera is located outside the movement trajectory by the drawing means, a part of the inspection camera and the camera moving means is a functional liquid droplet ejection head or drawing means. The movement of the inspection camera is not restricted. Therefore, the color mixture inspection can be performed at any timing.

  In this case, control means for controlling the drawing means and the camera moving means is further provided, and the control means can move the inspection camera after the main scanning of the plurality of functional liquid droplet ejection heads as the final pass. ,preferable.

  According to this configuration, the mixed color inspection can be performed so that the drawing of the final pass by the plurality of functional liquid droplet ejection heads is followed. That is, the drawing operation and the mixed color inspection can be performed partially overlapping, and the tact time in the work processing can be shortened.

  In these cases, the work stage is composed of a pair of fixedly arranged side by side in the main scanning direction, and while the drawing is performed on the work on one side, the work is removed on the other side. It is preferable to further include a discharger means for supplying the material.

  According to this configuration, the drawing operation on the workpiece and the workpiece discharging material operation can be performed simultaneously in parallel. Thereby, work processing can be performed without stopping the operation of the apparatus, and the tact time in the work processing can be significantly reduced.

  In these cases, it is preferable that each work stage has a backlight that illuminates the work from below, and the color mixing inspection means receives the light transmitted through the work and performs the color mixing inspection.

  According to this configuration, the color mixture inspection can be performed under bright illumination. For this reason, an inspection defect is suppressed and inspection accuracy can be improved.

  In this case, each work stage has a plurality of lift-up pins that lift up the work from the surface of the stage when the workpiece is discharged, and the plurality of lift-up pins and the work stage surface plate are translucent. It is preferable that it is made of a material.

  According to this configuration, in the illumination from the lower side of the work by the backlight, there is no shadow of the lift-up pin, and the inspection accuracy of the color mixing inspection can be further improved.

  The method for controlling a droplet discharge apparatus according to the present invention mainly includes a plurality of inkjet-type functional droplet discharge heads in which functional liquids of different colors are introduced into two works set side by side in the main scanning direction with a gap. While moving in the scanning direction, the drawing means that discharges functional droplets from multiple functional droplet discharge heads and draws by color alternately, and each workpiece after drawing moves while imaging in the main scanning direction And a mixed color inspecting unit for inspecting the mixed color of the image resulting from the drawing, and a main scanning of a plurality of functional liquid droplet ejection heads as a final pass for each workpiece In this case, the mixed color inspection means is moved so that the mixed color of the image is inspected.

  According to this configuration, the mixed color inspection can be performed so that the drawing of the final pass by the plurality of functional liquid droplet ejection heads is followed. That is, the drawing operation and the mixed color inspection can be performed partially overlapping, and the tact time in the work processing can be shortened.

  In this case, it is preferable that drawing is performed by main scanning starting from an intermediate position between two workpieces and extending over an even number of passes.

  According to this configuration, the movement of the color mixing inspection means accompanying the color mixing inspection can always be started from the intermediate position between the two workpieces, the color mixing inspection means can be moved efficiently, and the color mixing inspection can be performed in a short time. It can be carried out.

  A method for manufacturing an electro-optical device according to the present invention is characterized in that a film-forming unit made of functional droplets is formed on a workpiece using the above-described droplet discharge device.

  An electro-optical device according to the present invention is characterized in that a film forming unit using functional droplets is formed on a workpiece using the above-described droplet discharge device.

  According to this configuration, a high-quality electro-optical device can be efficiently manufactured. In addition, as a functional material, the light emitting material (Electro-Luminescence light emitting layer / hole injection layer) of the organic EL device, the filter material (filter element) of the color filter used for the liquid crystal display device, the electron emission device (Field Emission) Display, FED) fluorescent material (phosphor), fluorescent material (phosphor) of PDP (plasma display panel) device, electrophoretic material (electrophore) of electrophoretic display device, etc. A liquid material that can be discharged by an inkjet head). Examples of the electro-optical device (Flat Panel Display, FPD) include an organic EL device, a liquid crystal display device, an electron emission device, a PDP device, and an electrophoretic display device.

  An electronic apparatus according to an aspect of the invention includes the electro-optical device manufactured by the above-described method for manufacturing the electro-optical device or the above-described electro-optical device.

  In this case, examples of the electronic device include a mobile phone and a personal computer equipped with a so-called flat panel display, and various electric products.

  Hereinafter, a droplet discharge device according to the present invention will be described with reference to the accompanying drawings. This droplet discharge device is incorporated in the production line of flat panel displays such as liquid crystal display devices, and introduces functional liquids such as special inks and luminescent resin liquids into a plurality of functional droplet discharge heads. A color filter or the like is manufactured by forming a film forming portion with a functional liquid on a workpiece.

  As shown in FIG. 1, the droplet discharge device 1 includes a drawing device 2 that performs a drawing process on a workpiece W, a drawing device 2 that is housed therein, a chamber device 3 that constitutes a clean room, and a chamber device 3. And a discharger device 4 for removing a workpiece W through a discharger opening (not shown) provided on the side wall.

  The drawing apparatus 2 is disposed on a stone surface plate, and is disposed between a pair of work stages 10 on which a work W is set and disposed side by side in the main scanning direction, and the pair of work stages 10. A discharge inspection unit 11 for inspecting the discharge performance of the plurality of functional liquid droplet discharge heads 30, and disposed between the discharge inspection unit 11 and the pair of work stages 10, and both of the pair of work stages 10 in the main scanning direction. Four flushing units 12 arranged on the outside, a maintenance unit 13 arranged on the outermost side in the main scanning direction, and a functional droplet of R color, G color, and B color are provided so as to straddle them. And a drawing unit (drawing means) 14 on which a plurality of functional droplet discharge heads 30 for discharging are mounted, and the entire apparatus is comprehensively controlled by a control computer (not shown). Also, the drawing apparatus 2 includes a color mixing inspection unit (color mixing inspection means) 15 that moves in the main scanning direction above the drawn workpiece W and inspects the color mixture of the R, G, and B functional liquids. , Four alignment cameras 16 (see FIG. 2) that image the alignment marks formed on the workpiece and are formed on the workpiece W, and a static elimination unit (not shown) that neutralizes the workpiece W when the workpiece W is removed. ) And are further provided.

  As shown in FIG. 3, each work stage 10 includes a suction table 20 on which a work W is set, a θ table 21 that rotates the suction table 20 in the θ direction, a Z-axis table 22 that moves the suction table 20 up and down, The θ table 21 and the Z-axis table 22 are driven and controlled by a control computer. Accordingly, the θ correction of the set work W is performed by rotating the θ table 21 by the control computer based on the imaging result of each alignment camera 16, and the Z-axis table 22 is slightly moved up and down. Then, the distance (work gap) between the surface of the set work W and the nozzle surface of the functional liquid droplet ejection head 30 is finely adjusted.

  The suction table 20 has a backlight 17 that illuminates the workpiece W set from the back side, and a plurality of lift-up pins 18 that lift the workpiece W from the surface of the suction table 20 when the workpiece W is discharged. And are provided. The plurality of lift-up pins 18 are arranged and arranged in a matrix, and are raised and lowered from the surface of the suction table 20 by a lift-up mechanism (not shown) incorporated in the suction table 20. Also, a backlight 17 configured by arranging surface light emitters or point light emitters in an array is provided on the upper surface of the plate on which the plurality of lift-up pins 18 are erected. The backlight 17 illuminates the set work W from the back surface, and in this state, the color mixture inspection by the color mixture inspection unit 15 is performed. This makes it easy to determine the color of the R, G, B color functional liquid ejected by the plurality of functional liquid droplet ejection heads 30 with respect to the workpiece W, thereby improving the inspection accuracy of the mixed color inspection.

  Further, the surface plate of the suction table 20 and the plurality of lift-up pins 18 are made of a translucent material, and the backlight 17 prevents the shadows of the lift-up pins 18 from being generated on the workpiece W. . Each θ-corrected workpiece W set on the pair of workpiece stages 10 is displaced in the sub-scanning direction. In this case, the control computer performs drawing processing from one workpiece W to the other workpiece W. At the time of the shift, a plurality of head units 25 to be described later are moved in the sub-scanning direction by the amount of positional deviation, and after performing position correction, control is performed to perform drawing processing.

  As shown in FIGS. 1 to 4, the drawing unit 14 includes a plurality of head units 25 and a plurality of head units 25, and moves the mounted head units 25 in the main scanning direction and the sub-scanning direction. Head moving means 26, a plurality of head auxiliary devices 27 including a functional liquid supply system and a head electrical system connected to each head unit by piping and wiring, and an auxiliary moving means for moving the plurality of head auxiliary devices 27 in the main scanning direction The control computer controls the head moving means 26 and the accompanying moving means 28 to move the plurality of head attached devices 27 so as to follow as the plurality of head units 25 move. ing. At this time, the driving of the head moving unit 26 and the accompanying moving unit 28 at the start of the drawing operation is configured such that the head moving unit 26 moves after the accompanying moving unit 28 has moved in advance, and the driving is stopped. Is configured such that after the head moving means 26 stops in advance, the accompanying moving means 28 stops.

  Each head unit 25 includes a plurality of functional liquid droplet ejection heads 30 that eject functional liquid droplets to the workpiece W, and a carriage plate that positions and mounts the plurality of functional liquid droplet ejection heads 30. . That is, the plurality of functional liquid droplet ejection heads 30 are mounted on the head moving unit 26 via the carriage plate.

  The head moving unit 26 includes a main scanning moving unit 35 that moves the plurality of head units 25 in the main scanning direction, a sub scanning moving unit 36 that moves the plurality of head units 25 in the sub scanning direction orthogonal to the main scanning direction, and A plurality of head units 25 are mounted movably in the main scanning direction and the sub-scanning direction.

  As shown in FIG. 4, the main scanning moving means 35 has a gantry structure, and a pair of main guide rails 40 provided so as to extend in the main scanning direction with the pair of work stages 10 interposed therebetween, and a pair of main guide rails 40. A pair of main sliders 41 that move slidably on the main guide rail 40 in the main scanning direction, a main bridge frame 42 that is installed on the pair of main sliders 41 and extends in the sub-scanning direction, The pair of main sliders 41 can be moved with higher accuracy than the auxiliary moving means 28 using a linear motor (not shown) as a drive source. The main scanning moving unit 35 is configured such that the moving speed between the works W is faster than the drawing speed of the work W.

  The sub-scanning movement unit 36 is disposed on the main bridge frame 42, and each head unit 25 is mounted on the main bridge frame 42 via the sub-scanning movement unit 36. Thereby, the plurality of head units 25 are configured to be movable in the sub-scanning direction.

  Each head-attached device 27 includes a functional liquid supply system including a sub-tank for supplying functional liquid to each functional liquid droplet ejection head 30, and ejection driving for ejecting functional liquid droplets to each functional liquid droplet ejection head 30. And a head electrical system including a head substrate for applying a waveform, and is configured to be heavier than the weight of the head unit 25. Each head unit 25 and each head accessory device 27 are connected to each other by a functional liquid supply tube 45 and are also connected by a wiring cable 46, so that the functional liquid is supplied to a plurality of functional liquid droplet ejection heads 30. A functional liquid is supplied through the supply tube 45 and a discharge drive waveform is applied through the wiring cable 46. At this time, the plurality of functional liquid supply tubes 45 are configured to have the same length, and the plurality of wiring cables 46 are configured to have the same length.

  The auxiliary moving means 28 is configured to move following the head moving means 26 while maintaining a separation distance that maintains the physical connection state of the piping and wiring between the plurality of head units 25 and the plurality of head auxiliary devices 27. ing. The accessory moving means 28 also has a gantry structure similar to the main scanning moving means described above, and is configured to move above the movement locus of the head moving means 26. For this reason, the head moving means 26 and the accompanying moving means 28 can move without interfering with each other. The auxiliary moving means 28 is disposed outside the one main guide rail 40 in the sub-scanning direction, and a pair of sub guides are disposed above the other main guide rail 40 with a discharge material gap 48 therebetween. Rail 50, a pair of sub-sliders 51 that move slidably on the pair of sub-guide rails in the main scanning direction, and a sub-bridge provided on the pair of sub-sliders 51 and extending in the sub-scanning direction The pair of sub sliders 51 is configured to move in the main scanning direction using a linear motor similar to the pair of main sliders 41 as a drive source. The sub-bridge frame 52 is disposed in parallel with the main bridge frame 42 in the sub-scanning direction, and a vibration isolating member 55 is provided on each of the leg portions, and the plurality of head accessory devices 27 are provided. Absorbs the vibration caused by the movement of

  As shown in FIG. 3, the ejection inspection unit 11 includes an inspection sheet 57 extending in a strip shape in the sub-scanning direction so as to receive inspection ejection from each functional liquid droplet ejection head 30, and the ejection position and imaging position of the inspection sheet 57. A sheet raising / lowering mechanism (not shown) that moves up and down, an inspection camera 58 that images the functional liquid droplets discharged and landed on the inspection sheet 57, and an inspection camera 58 that is lowered to the imaging position. And a camera moving mechanism (not shown) for moving it in the sub-scanning direction. The discharge performance inspection by the discharge inspection unit 11 is configured to be performed prior to the drawing process on the workpiece W.

  When the ejection performance of the functional liquid droplet ejection head 30 is inspected by the ejection inspection unit 11, first, functional liquid droplets are ejected from above by the functional liquid droplet ejection heads 30 on the inspection sheet 57 facing the ejection position. After the functional liquid droplets are landed on the inspection sheet 57, the inspection sheet 57 is lowered to the imaging position by the sheet lifting mechanism. Next, the inspection camera 58 is moved from the retracted position in the main scanning direction by the camera moving mechanism to the inspection sheet 57 that has reached the imaging position, so that the inspection sheet 57 is directly above the inspection sheet 57. Thereafter, while moving the inspection camera 58 in the sub-scanning direction, the functional liquid droplets landed on the inspection sheet 57 are imaged, and the ejection state of each functional liquid droplet ejection head 30 is inspected from the imaging result. At this time, if there is a defective liquid droplet ejection head 30, the head unit 25 faces the maintenance unit 13 to eliminate the ejection failure, and the ejection state is inspected again. After the inspection, the inspected portion of the inspection sheet 57 is wound up, and the discharge inspection is similarly performed on the newly drawn undrawn portion.

  Each flushing unit 12 receives functional droplets discharged and discharged from the plurality of functional droplet discharge heads 30, and the plurality of functional droplet discharge heads 30 are each flushing unit 12 before drawing on the workpiece W. In this case, the functional liquid droplets are stably discharged. The four flushing units 12 include a pair of intermediate flushing units 12 disposed between the pair of work stages 10 and a pair of end flushing units 12 disposed on the outer side in the main scanning direction of the pair of work stages 10. , Is composed of. For this reason, since the discharge state can be stabilized by discarding and discharging from the head unit 25 before the drawing process, it is possible to appropriately draw on the workpiece W. In addition, since the discharge state can be stabilized by performing the discharge from the head unit 25 before the discharge inspection, a good discharge inspection can be performed.

  As shown in FIG. 4, the maintenance unit 13 performs suction for removing the functional liquid thickened in each functional liquid droplet ejection head 30, and stores each functional liquid droplet ejection head 30 with each function. A suction device 64 for capping the droplet discharge head 30; a wiping device 65 that is disposed outside the suction device 64 in the sub-scanning direction and moves the nozzle surface of the functional droplet discharge head 30 in the sub-scanning direction; It has. The maintenance unit 13 is disposed at the outermost end in the main scanning direction and serves as the home position of the head unit 25 that moves in the main scanning direction. The maintenance unit 13 is disposed directly below the head unit 25 that faces the home position. ing.

  The suction device 64 includes a plurality of individual suction units 68 so as to correspond to the plurality of head units 25, and when suctioning each functional liquid droplet ejection head 30, the suction device 64 faces the maintenance unit 13. The individual suction units 68 are moved upward with respect to the head unit 25 so that the head unit 25 can be sucked individually. When capping each functional liquid droplet ejection head 30, all the individual suction units 68 are moved upward to cap all the functional liquid droplet ejection heads 30.

  When wiping the nozzle surface of each functional liquid droplet ejection head 30 with the wiping device 65, the suction device 64 moves downward so that the wiping device 65 can move in the sub-scanning direction. Thereafter, the wiping device 65 moves in the sub-scanning direction to wipe the nozzle surface of each functional liquid droplet ejection head 30.

  The color mixing inspection unit 15 includes a color mixing inspection camera 73 that captures a drawing pattern (image) formed on the workpiece W after drawing, and a color mixing camera moving means 69 that moves the color mixing inspection camera 73 in the main scanning direction. The color mixing camera moving means 69 is provided outside the one sub guide rail 50 in the sub scanning direction, and moves in the main scanning direction on the color mixing guide rail 70 extending in the main scanning direction. And a cantilever frame 72 having an inverted “L” cross-section standing on the color mixing slider 71. The mixed color inspection camera 73 is attached to the cantilever frame 72 so as to be positioned above the set work W. The mixed color inspection unit 15 includes a plurality of head units 25, a head moving means 26, and a plurality of head accessories. The color mixing inspection is possible without interfering with the device 27 and the accompanying moving means 28. Then, the color mixing inspection camera 73 is moved in the main scanning direction, a drawing pattern is imaged from above the work W, and based on the inspection result, the non-defective / defective product of the work W due to color mixing is selected.

  The neutralization unit neutralizes the workpiece W set on each workpiece stage 10 during material removal, and irradiates the workpiece W with soft X-rays by means of soft X-ray irradiation means that irradiates soft X-rays. By doing so, the work W is neutralized.

  The material removal device 4 includes a single transfer robot 75 that performs material removal of the workpiece W, and a robot moving unit that moves the transfer robot 75 in the main scanning direction and alternately faces the pair of work stages 10. The transfer robot 75 and the robot moving means 76 are controlled by the control computer. The robot moving means 76 has a pair of moving rails 77 arranged so as to extend in the main scanning direction, and a moving slider 78 that moves on the moving rail 77 in the main scanning direction. A transfer robot 75 is mounted on the top. The transfer robot 75 removes the material of the other workpiece W during drawing of the workpiece W through the discharge material opening and the gap 48 for the material to be removed formed in the chamber device.

  Here, a series of drawing processes on the workpiece W by the droplet discharge device 1 will be described with reference to FIG. For example, the drawing operation on the workpiece W is configured to draw a total of four passes by moving the plurality of head units 25 back and forth in the main scanning direction. Note that the number of paths is not limited to four but may be an even number. First, during drawing of the workpiece W set on one workpiece stage 10 (see FIG. 5A), the workpiece W is set on the other workpiece stage 10 by the discharger device 4 (FIG. 5B). )), An alignment mark formed on the workpiece W is imaged by the alignment camera 16, and θ correction of the workpiece W is performed (see FIG. 5C). As a result, during the drawing of one workpiece W, the θ correction of the other workpiece W is ended, so that it is possible to proceed to the drawing processing of the next workpiece W without time loss. In this case, the other workpiece W after θ correction is set in a state of being displaced in the sub-scanning direction with respect to the one workpiece W being drawn, and based on the imaging result of the alignment camera 16, the amount of displacement is set. Is measured.

  When the drawing process of one work W is about to end, that is, when the final pass of the plurality of head units 25 is performed between the pair of work stages 10, the drawing operation of the plurality of head units 25 is performed. Subsequently, the mixed color inspection unit 15 inspects the mixed color of the workpiece W after drawing (see FIG. 5C). Thereby, since the mixed color inspection can be performed during the drawing operation, the tact time in the mixed color inspection can be shortened. Thereafter, when drawing of one workpiece W is completed, the plurality of head units 25 shift drawing processing from one workpiece W to the other workpiece W (see FIG. 5D). At this time, the main scanning moving means 35 is controlled by the control computer so that the moving speed of the head unit 25 between the works W is higher than the drawing speed on the work W. Thus, the tact time can be shortened by moving the head unit 25 at a high speed in a non-drawing section where stable ejection is not necessary. In addition, the control computer controls the sub-scanning moving unit 36 to move the plurality of head units 25 in the sub-scanning direction by the amount of the above-described positional deviation, so that the head unit 25 is appropriately exposed to the workpiece W. I can do it.

  Next, during drawing of the other workpiece W, one of the workpieces W after drawing is discharged by the discharging unit, and then removed by the discharger device 4, and a new workpiece W is transferred to the one workpiece. Feed the material on the stage 10. Thereby, since the drawing process on the workpiece W can be performed without stopping the operation of the apparatus, the tact time can be shortened.

  According to the above configuration, the color mixture inspection unit 15 inspects the work W immediately after drawing drawn by the drawing unit 14 and inspects the mixed color before performing material removal from the work stage 10. be able to. That is, the color mixture inspection can be performed before drawing on the next workpiece. For this reason, measures such as maintenance on the plurality of functional liquid droplet ejection heads 30 can be implemented at the stage where a drawing defect is found by inspection, and the number of workpieces with drawing defects can be minimized. Thereby, the yield in work processing can be improved as a whole. In this embodiment, the head moving means 26 and the accompanying moving means 28 are driven by a common linear motor, but may be driven by different drive sources. Further, the incidental moving means 28 is disposed on the stone surface plate, but may be configured to be supported by the chamber device 3. Further, the auxiliary moving means 28 may support and move a plurality of head auxiliary devices 27 in a cantilever manner.

  Next, color filters, liquid crystal display devices, organic EL devices, plasma displays (PDP devices), electron emission devices (FEDs) are electro-optical devices (flat panel displays) manufactured using the droplet discharge device of this embodiment. The structure and the manufacturing method thereof will be described by taking an active matrix substrate and the like formed on these display devices as an example. Note that an active matrix substrate refers to a substrate over which a thin film transistor, a source line electrically connected to the thin film transistor, and a data line are formed.

First, a method for manufacturing a color filter incorporated in a liquid crystal display device, an organic EL device or the like will be described. FIG. 6 is a flowchart showing the manufacturing process of the color filter, and FIG. 7 is a schematic cross-sectional view of the color filter 500 (filter base body 500A) of the present embodiment shown in the order of the manufacturing process.
First, in the black matrix forming step (S101), a black matrix 502 is formed on a substrate (W) 501 as shown in FIG. The black matrix 502 is formed of metal chromium, a laminate of metal chromium and chromium oxide, resin black, or the like. A sputtering method, a vapor deposition method, or the like can be used to form the black matrix 502 made of a metal thin film. Further, when forming the black matrix 502 made of a resin thin film, a gravure printing method, a photoresist method, a thermal transfer method, or the like can be used.

Subsequently, in the bank formation step (S102), a bank 503 is formed in a state of being superimposed on the black matrix 502. That is, first, as shown in FIG. 7B, a resist layer 504 made of a negative transparent photosensitive resin is formed so as to cover the substrate 501 and the black matrix 502. Then, an exposure process is performed with the upper surface covered with a mask film 505 formed in a matrix pattern shape.
Further, as shown in FIG. 7C, the resist layer 504 is patterned by etching an unexposed portion of the resist layer 504 to form a bank 503. When the black matrix is formed from resin black, it is possible to use both the black matrix and the bank.
The bank 503 and the black matrix 502 below the partition 507b partition each pixel region 507a, and in the subsequent colored layer forming step, the functional liquid droplet ejection head 30 forms colored layers (film forming portions) 508R, 508G, When forming 508B, the landing area of the functional droplet is defined.

The filter substrate 500A is obtained through the above black matrix forming step and bank forming step.
In the present embodiment, as the material for the bank 503, a resin material whose surface is lyophobic (hydrophobic) is used. Since the surface of the substrate (glass substrate) 501 is lyophilic (hydrophilic), the droplets into each pixel region 507a surrounded by the bank 503 (partition wall portion 507b) in the colored layer forming step described later. Variations in landing position can be automatically corrected.

  Next, in the colored layer forming step (S103), as shown in FIG. 7D, functional droplets are ejected by the functional droplet ejecting head 30 to enter each pixel region 507a surrounded by the partition wall portion 507b. Let it land. In this case, the functional liquid droplet ejection head 30 is used to introduce functional liquids (filter materials) of three colors of R, G, and B to eject functional liquid droplets. Note that the three-color arrangement pattern of R, G, and B includes a stripe arrangement, a mosaic arrangement, and a delta arrangement.

Thereafter, the functional liquid is fixed through a drying process (a process such as heating), and three colored layers 508R, 508G, and 508B are formed. When the colored layers 508R, 508G, and 508B are formed, the process proceeds to the protective film forming step (S104), and as shown in FIG. 7E, the substrate 501, the partition wall portion 507b, and the colored layers 508R, 508G, and 508B are moved. A protective film 509 is formed so as to cover the upper surface.
That is, after the protective film coating liquid is discharged over the entire surface of the substrate 501 where the colored layers 508R, 508G, and 508B are formed, the protective film 509 is formed through a drying process.
Then, after forming the protective film 509, the color filter 500 moves to a film forming process such as ITO (Indium Tin Oxide) which becomes a transparent electrode in the next process.

  FIG. 8 is a cross-sectional view of a principal part showing a schematic configuration of a passive matrix liquid crystal device (liquid crystal device) as an example of a liquid crystal display device using the color filter 500 described above. By attaching auxiliary elements such as a liquid crystal driving IC, a backlight, and a support to the liquid crystal device 520, a transmissive liquid crystal display device as a final product can be obtained. Since the color filter 500 is the same as that shown in FIG. 7, the corresponding parts are denoted by the same reference numerals and description thereof is omitted.

The liquid crystal device 520 is roughly configured by a color filter 500, a counter substrate 521 made of a glass substrate, and a liquid crystal layer 522 made of an STN (Super Twisted Nematic) liquid crystal composition sandwiched between them, The filter 500 is arranged on the upper side (observer side) in the figure.
Although not shown, polarizing plates are provided on the outer surfaces of the counter substrate 521 and the color filter 500 (surfaces opposite to the liquid crystal layer 522 side), and the polarizing plates located on the counter substrate 521 side are also provided. A backlight is disposed outside.

On the protective film 509 (liquid crystal layer side) of the color filter 500, a plurality of strip-shaped first electrodes 523 elongated in the left-right direction in FIG. 8 are formed at a predetermined interval, and the color of the first electrode 523 is A first alignment film 524 is formed so as to cover the surface opposite to the filter 500 side.
On the other hand, a plurality of strip-shaped second electrodes 526 elongated in a direction orthogonal to the first electrode 523 of the color filter 500 are formed on the surface of the counter substrate 521 facing the color filter 500 at a predetermined interval. A second alignment film 527 is formed so as to cover the surface of the two electrodes 526 on the liquid crystal layer 522 side. The first electrode 523 and the second electrode 526 are made of a transparent conductive material such as ITO.

The spacer 528 provided in the liquid crystal layer 522 is a member for keeping the thickness (cell gap) of the liquid crystal layer 522 constant. The sealing material 529 is a member for preventing the liquid crystal composition in the liquid crystal layer 522 from leaking to the outside. Note that one end of the first electrode 523 extends to the outside of the sealing material 529 as a lead-out wiring 523a.
A portion where the first electrode 523 and the second electrode 526 intersect with each other is a pixel, and the color layers 508R, 508G, and 508B of the color filter 500 are located in the portion that becomes the pixel.

  In a normal manufacturing process, patterning of the first electrode 523 and application of the first alignment film 524 are performed on the color filter 500 to create a portion on the color filter 500 side. Patterning of the electrode 526 and application of the second alignment film 527 are performed to create a portion on the counter substrate 521 side. Thereafter, a spacer 528 and a sealing material 529 are formed in the portion on the counter substrate 521 side, and the portion on the color filter 500 side is bonded in this state. Next, liquid crystal constituting the liquid crystal layer 522 is injected from the inlet of the sealing material 529, and the inlet is closed. Thereafter, both polarizing plates and the backlight are laminated.

  In the droplet discharge device of the embodiment, for example, the spacer material (functional liquid) constituting the cell gap is applied, and before the portion on the color filter 500 side is bonded to the portion on the counter substrate 521 side, the sealing material 529 is applied. The liquid crystal (functional liquid) can be uniformly applied to the region surrounded by. Further, the printing of the sealing material 529 can be performed by the functional liquid droplet ejection head 30. Furthermore, the first and second alignment films 524 and 527 can be applied by the functional liquid droplet ejection head 30.

FIG. 9 is a cross-sectional view of a principal part showing a schematic configuration of a second example of a liquid crystal device using the color filter 500 manufactured in the present embodiment.
The liquid crystal device 530 is significantly different from the liquid crystal device 520 in that the color filter 500 is arranged on the lower side (the side opposite to the observer side) in the figure.
The liquid crystal device 530 is generally configured by sandwiching a liquid crystal layer 532 made of STN liquid crystal between a color filter 500 and a counter substrate 531 made of a glass substrate or the like. Although not shown, polarizing plates and the like are provided on the outer surfaces of the counter substrate 531 and the color filter 500, respectively.

On the protective film 509 of the color filter 500 (on the liquid crystal layer 532 side), a plurality of strip-shaped first electrodes 533 elongated in the depth direction in the figure are formed at predetermined intervals, and the liquid crystal of the first electrodes 533 is formed. A first alignment film 534 is formed so as to cover the surface on the layer 532 side.
A plurality of strip-shaped second electrodes 536 extending in a direction orthogonal to the first electrode 533 on the color filter 500 side are formed on the surface of the counter substrate 531 facing the color filter 500 at a predetermined interval. A second alignment film 537 is formed so as to cover the surface of the second electrode 536 on the liquid crystal layer 532 side.

The liquid crystal layer 532 is provided with a spacer 538 for keeping the thickness of the liquid crystal layer 532 constant and a sealing material 539 for preventing the liquid crystal composition in the liquid crystal layer 532 from leaking to the outside. Yes.
Similarly to the liquid crystal device 520 described above, a portion where the first electrode 533 and the second electrode 536 intersect with each other is a pixel, and the colored layers 508R, 508G, and 508B of the color filter 500 are located at the portion that becomes the pixel. Is configured to do.

FIG. 10 shows a third example in which a liquid crystal device is configured using a color filter 500 to which the present invention is applied, and is an exploded perspective view showing a schematic configuration of a transmissive TFT (Thin Film Transistor) type liquid crystal device. It is.
In the liquid crystal device 550, the color filter 500 is arranged on the upper side (observer side) in the figure.

The liquid crystal device 550 includes a color filter 500, a counter substrate 551 disposed so as to face the color filter 500, a liquid crystal layer (not shown) sandwiched therebetween, and an upper surface side (observer side) of the color filter 500. The polarizing plate 555 and the polarizing plate (not shown) arranged on the lower surface side of the counter substrate 551 are roughly configured.
A liquid crystal driving electrode 556 is formed on the surface of the protective film 509 of the color filter 500 (the surface on the counter substrate 551 side). The electrode 556 is made of a transparent conductive material such as ITO, and is a full surface electrode that covers the entire region where a pixel electrode 560 described later is formed. An alignment film 557 is provided so as to cover the surface of the electrode 556 opposite to the pixel electrode 560.

  An insulating layer 558 is formed on the surface of the counter substrate 551 facing the color filter 500, and the scanning lines 561 and the signal lines 562 are formed on the insulating layer 558 in a state of being orthogonal to each other. A pixel electrode 560 is formed in a region surrounded by the scanning lines 561 and the signal lines 562. In an actual liquid crystal device, an alignment film is provided on the pixel electrode 560, but the illustration is omitted.

  In addition, a thin film transistor 563 including a source electrode, a drain electrode, a semiconductor, and a gate electrode is incorporated in a portion surrounded by the cutout portion of the pixel electrode 560 and the scanning line 561 and the signal line 562. . The thin film transistor 563 is turned on / off by application of signals to the scanning line 561 and the signal line 562 so that energization control to the pixel electrode 560 can be performed.

  Note that the liquid crystal devices 520, 530, and 550 in the above examples are transmissive, but a reflective liquid crystal device or a transflective liquid crystal device is provided by providing a reflective layer or a transflective layer. You can also

  Next, FIG. 11 is a cross-sectional view of a main part of a display region (hereinafter simply referred to as a display device 600) of the organic EL device.

The display device 600 is schematically configured with a circuit element portion 602, a light emitting element portion 603, and a cathode 604 laminated on a substrate (W) 601.
In the display device 600, light emitted from the light emitting element portion 603 to the substrate 601 side is transmitted through the circuit element portion 602 and the substrate 601 and emitted to the observer side, and the light emitting element portion 603 is opposite to the substrate 601. After the light emitted to the side is reflected by the cathode 604, the light passes through the circuit element portion 602 and the substrate 601 and is emitted to the observer side.

  A base protective film 606 made of a silicon oxide film is formed between the circuit element portion 602 and the substrate 601, and an island-shaped semiconductor film 607 made of polycrystalline silicon is formed on the base protective film 606 (on the light emitting element portion 603 side). Is formed. In the left and right regions of the semiconductor film 607, a source region 607a and a drain region 607b are formed by high concentration cation implantation, respectively. A central portion where no positive ions are implanted is a channel region 607c.

  In the circuit element portion 602, a transparent gate insulating film 608 covering the base protective film 606 and the semiconductor film 607 is formed, and a position corresponding to the channel region 607c of the semiconductor film 607 on the gate insulating film 608 is formed. For example, a gate electrode 609 made of Al, Mo, Ta, Ti, W or the like is formed. On the gate electrode 609 and the gate insulating film 608, a transparent first interlayer insulating film 611a and a second interlayer insulating film 611b are formed. Further, contact holes 612a and 612b are formed through the first and second interlayer insulating films 611a and 611b and communicating with the source region 607a and the drain region 607b of the semiconductor film 607, respectively.

A transparent pixel electrode 613 made of ITO or the like is patterned and formed in a predetermined shape on the second interlayer insulating film 611b, and the pixel electrode 613 is connected to the source region 607a through the contact hole 612a. .
A power supply line 614 is disposed on the first interlayer insulating film 611a, and the power supply line 614 is connected to the drain region 607b through the contact hole 612b.

  Thus, the driving thin film transistors 615 connected to the pixel electrodes 613 are formed in the circuit element portion 602, respectively.

The light emitting element portion 603 includes a functional layer 617 stacked on each of the plurality of pixel electrodes 613, and a bank portion 618 provided between each pixel electrode 613 and the functional layer 617 to partition each functional layer 617. It is roughly structured.
The pixel electrode 613, the functional layer 617, and the cathode 604 provided on the functional layer 617 constitute a light emitting element. Note that the pixel electrode 613 is formed by patterning in a substantially rectangular shape in plan view, and a bank portion 618 is formed between the pixel electrodes 613.

The bank unit 618 is laminated on the inorganic bank layer 618a (first bank layer) 618a (first bank layer) formed of an inorganic material such as SiO, SiO ₂ or TiO ₂ , and is made of an acrylic resin, a polyimide resin, or the like. It is composed of an organic bank layer 618b (second bank layer) having a trapezoidal cross section formed of a resist having excellent heat resistance and solvent resistance. A part of the bank unit 618 is formed on the peripheral edge of the pixel electrode 613.
An opening 619 that gradually expands upward with respect to the pixel electrode 613 is formed between the bank portions 618.

The functional layer 617 includes a hole injection / transport layer 617a formed in a stacked state on the pixel electrode 613 in the opening 619, and a light emitting layer 617b formed on the hole injection / transport layer 617a. Has been. Note that another functional layer having other functions may be further formed adjacent to the light emitting layer 617b. For example, it is possible to form an electron transport layer.
The hole injection / transport layer 617a has a function of transporting holes from the pixel electrode 613 side and injecting them into the light emitting layer 617b. The hole injection / transport layer 617a is formed by discharging a first composition (functional liquid) containing a hole injection / transport layer forming material. A known material is used as the hole injection / transport layer forming material.

  The light emitting layer 617b emits light in red (R), green (G), or blue (B), and discharges a second composition (functional liquid) containing a light emitting layer forming material (light emitting material). Is formed. As the solvent (nonpolar solvent) of the second composition, a known material that is insoluble in the hole injection / transport layer 617a is preferably used, and such a nonpolar solvent is used as the second composition of the light emitting layer 617b. By using the light emitting layer 617b, the light emitting layer 617b can be formed without re-dissolving the hole injection / transport layer 617a.

  The light emitting layer 617b is configured such that the holes injected from the hole injection / transport layer 617a and the electrons injected from the cathode 604 are recombined in the light emitting layer to emit light.

  The cathode 604 is formed so as to cover the entire surface of the light emitting element portion 603, and plays a role of flowing current to the functional layer 617 in a pair with the pixel electrode 613. Note that a sealing member (not shown) is disposed on the cathode 604.

Next, the manufacturing process of said display apparatus 600 is demonstrated with reference to FIGS.
As shown in FIG. 12, the display device 600 includes a bank part forming step (S111), a surface treatment step (S112), a hole injection / transport layer forming step (S113), a light emitting layer forming step (S114), It is manufactured through an electrode formation step (S115). In addition, a manufacturing process is not restricted to what is illustrated, and when other processes are removed as needed, it may be added.

First, in the bank part forming step (S111), as shown in FIG. 13, an inorganic bank layer 618a is formed on the second interlayer insulating film 611b. The inorganic bank layer 618a is formed by forming an inorganic film at a formation position and then patterning the inorganic film by a photolithography technique or the like. At this time, a part of the inorganic bank layer 618 a is formed so as to overlap with the peripheral edge of the pixel electrode 613.
When the inorganic bank layer 618a is formed, an organic bank layer 618b is formed on the inorganic bank layer 618a as shown in FIG. The organic bank layer 618b is also formed by patterning using a photolithography technique or the like in the same manner as the inorganic bank layer 618a.
In this way, the bank portion 618 is formed. Accordingly, an opening 619 opening upward with respect to the pixel electrode 613 is formed between the bank portions 618. The opening 619 defines a pixel region.

In the surface treatment step (S112), a lyophilic process and a lyophobic process are performed. The region to be subjected to the lyophilic treatment is the first laminated portion 618aa of the inorganic bank layer 618a and the electrode surface 613a of the pixel electrode 613. These regions are made lyophilic by plasma treatment using, for example, oxygen as a treatment gas. Is done. This plasma treatment also serves to clean the ITO that is the pixel electrode 613.
In addition, the lyophobic treatment is performed on the wall surface 618s of the organic bank layer 618b and the upper surface 618t of the organic bank layer 618b, and the surface is fluorinated (treated to be liquid repellent) by plasma treatment using tetrafluoromethane as a processing gas, for example. )
By performing this surface treatment process, when forming the functional layer 617 using the functional liquid droplet ejection head 30, the functional liquid droplets can be landed more reliably on the pixel area. It is possible to prevent the functional droplets from overflowing from the opening 619.

  Then, the display device base 600A is obtained through the above steps. The display device base 600A is placed on each work stage 10 of the droplet discharge device 1 shown in FIG. 1, and the following hole injection / transport layer forming step (S113) and light emitting layer forming step (S114) are performed. Is called.

  As shown in FIG. 15, in the hole injection / transport layer forming step (S113), the first composition containing the hole injection / transport layer forming material is transferred from the functional liquid droplet ejection head 30 to each opening 619 that is a pixel region. Discharge inside. Thereafter, as shown in FIG. 16, a drying process and a heat treatment are performed to evaporate the polar solvent contained in the first composition, and a hole injection / transport layer 617a is formed on the pixel electrode (electrode surface 613a) 613.

Next, the light emitting layer forming step (S114) will be described. In this light emitting layer forming step, as described above, in order to prevent re-dissolution of the hole injection / transport layer 617a, the hole injection / transport layer 617a is used as a solvent for the second composition used in forming the light emitting layer. A non-polar solvent insoluble in.
However, since the hole injection / transport layer 617a has a low affinity for the nonpolar solvent, the hole injection / transport layer 617a has a low affinity even if the second composition containing the nonpolar solvent is discharged onto the hole injection / transport layer 617a. There is a possibility that the injection / transport layer 617a and the light emitting layer 617b cannot be adhered to each other, or the light emitting layer 617b cannot be applied uniformly.
Therefore, in order to increase the surface affinity of the hole injection / transport layer 617a with respect to the nonpolar solvent and the light emitting layer forming material, it is preferable to perform surface treatment (surface modification treatment) before forming the light emitting layer. In this surface treatment, a surface modifying material which is the same solvent as the non-polar solvent of the second composition used in the formation of the light emitting layer or a similar solvent is applied on the hole injection / transport layer 617a, and this is applied. This is done by drying.
By performing such treatment, the surface of the hole injection / transport layer 617a is easily adapted to the nonpolar solvent. In the subsequent step, the second composition containing the light emitting layer forming material is added to the hole injection / transport layer. It can be uniformly applied to 617a.

  Next, as shown in FIG. 17, the second composition containing the light emitting layer forming material corresponding to one of the colors (blue (B) in the example of FIG. 17) is used as a functional droplet as a pixel region ( A predetermined amount is driven into the opening 619). The second composition driven into the pixel region spreads on the hole injection / transport layer 617a and fills the opening 619. Even if the second composition deviates from the pixel region and lands on the upper surface 618t of the bank portion 618, the upper composition 618t is subjected to the liquid repellent treatment as described above. Things are easy to roll into the opening 619.

  Thereafter, by performing a drying process or the like, the discharged second composition is dried, the nonpolar solvent contained in the second composition is evaporated, and as shown in FIG. 18, the hole injection / transport layer 617a A light emitting layer 617b is formed thereon. In the case of this figure, a light emitting layer 617b corresponding to blue (B) is formed.

  Similarly, using the functional liquid droplet ejection head 30, as shown in FIG. 19, the same steps as in the case of the light emitting layer 617b corresponding to blue (B) described above are sequentially performed, and other colors (red (R) and red (R) and A light emitting layer 617b corresponding to green (G) is formed. Note that the order in which the light-emitting layers 617b are formed is not limited to the illustrated order, and may be formed in any order. For example, the order of formation can be determined according to the light emitting layer forming material. In addition, the arrangement pattern of the three colors R, G, and B includes a stripe arrangement, a mosaic arrangement, a delta arrangement, and the like.

  As described above, the functional layer 617, that is, the hole injection / transport layer 617a and the light emitting layer 617b are formed on the pixel electrode 613. And it transfers to a counter electrode formation process (S115).

In the counter electrode forming step (S115), as shown in FIG. 20, a cathode 604 (counter electrode) is formed on the entire surface of the light emitting layer 617b and the organic bank layer 618b by, for example, vapor deposition, sputtering, CVD, or the like. In the present embodiment, the cathode 604 is configured by, for example, laminating a calcium layer and an aluminum layer.
On top of the cathode 604, an Al film, an Ag film as an electrode, and a protective layer such as SiO ₂ or SiN for preventing oxidation thereof are appropriately provided.

  After forming the cathode 604 in this way, the display device 600 is obtained by performing other processes such as a sealing process for sealing the upper part of the cathode 604 with a sealing member and a wiring process.

Next, FIG. 21 is an exploded perspective view of a main part of a plasma display device (PDP device: hereinafter simply referred to as a display device 700). In the figure, the display device 700 is shown with a part thereof cut away.
The display device 700 is schematically configured to include a first substrate 701, a second substrate 702, and a discharge display portion 703 formed between them, which are disposed to face each other. The discharge display unit 703 includes a plurality of discharge chambers 705. Among the plurality of discharge chambers 705, the three discharge chambers 705 of the red discharge chamber 705R, the green discharge chamber 705G, and the blue discharge chamber 705B are arranged to form one pixel.

Address electrodes 706 are formed in stripes at predetermined intervals on the upper surface of the first substrate 701, and a dielectric layer 707 is formed so as to cover the address electrodes 706 and the upper surface of the first substrate 701. On the dielectric layer 707, partition walls 708 are provided so as to be positioned between the address electrodes 706 and along the address electrodes 706. The partition 708 includes one extending on both sides in the width direction of the address electrode 706 as shown, and one not shown extending in the direction orthogonal to the address electrode 706.
A region partitioned by the partition 708 is a discharge chamber 705.

  A phosphor 709 is disposed in the discharge chamber 705. The phosphor 709 emits red (R), green (G), or blue (B) fluorescence, and the red phosphor 709R is disposed at the bottom of the red discharge chamber 705R, and the green discharge chamber 705G. A green phosphor 709G and a blue phosphor 709B are arranged at the bottom and the blue discharge chamber 705B, respectively.

On the lower surface of the second substrate 702 in the drawing, a plurality of display electrodes 711 are formed in stripes at predetermined intervals in a direction orthogonal to the address electrodes 706. A dielectric layer 712 and a protective film 713 made of MgO or the like are formed so as to cover them.
The first substrate 701 and the second substrate 702 are bonded so that the address electrodes 706 and the display electrodes 711 face each other in a state of being orthogonal to each other. The address electrode 706 and the display electrode 711 are connected to an AC power source (not shown).
When the electrodes 706 and 711 are energized, the phosphor 709 emits light in the discharge display portion 703, and color display is possible.

In the present embodiment, the address electrode 706, the display electrode 711, and the phosphor 709 can be formed using the droplet discharge device shown in FIG. Hereinafter, a process of forming the address electrode 706 on the first substrate 701 will be exemplified.
In this case, the following steps are performed with the first substrate 701 placed on each work stage 10 of the droplet discharge device 1.
First, a liquid material (functional liquid) containing a conductive film wiring forming material is landed on the address electrode formation region as a functional liquid droplet by the functional liquid droplet ejection head 30. This liquid material is obtained by dispersing conductive fine particles such as metal in a dispersion medium as a conductive film wiring forming material. As the conductive fine particles, metal fine particles containing gold, silver, copper, palladium, nickel, or the like, a conductive polymer, or the like is used.

  When the replenishment of the liquid material is completed for all the address electrode formation regions to be replenished, the address material 706 is formed by drying the discharged liquid material and evaporating the dispersion medium contained in the liquid material. .

By the way, although the formation of the address electrode 706 has been exemplified in the above, the display electrode 711 and the phosphor 709 can also be formed through the above steps.
In the case of forming the display electrode 711, as in the case of the address electrode 706, a liquid material (functional liquid) containing a conductive film wiring forming material is landed on the display electrode formation region as a functional droplet.
Further, in the case of forming the phosphor 709, a liquid material (functional liquid) containing a fluorescent material corresponding to each color (R, G, B) is ejected as droplets from the functional liquid droplet ejection head 30, and corresponding. Land in the color discharge chamber 705.

Next, FIG. 22 is a cross-sectional view of an essential part of an electron emission device (also referred to as an FED device or an SED device: hereinafter simply referred to as a display device 800). In the drawing, a part of the display device 800 is shown as a cross section.
The display device 800 is schematically configured to include a first substrate 801, a second substrate 802, and a field emission display portion 803 formed therebetween, which are disposed to face each other. The field emission display unit 803 includes a plurality of electron emission units 805 arranged in a matrix.

  On the upper surface of the first substrate 801, a first element electrode 806a and a second element electrode 806b constituting the cathode electrode 806 are formed so as to be orthogonal to each other. In addition, a conductive film 807 having a gap 808 is formed in a portion partitioned by the first element electrode 806a and the second element electrode 806b. That is, the first element electrode 806a, the second element electrode 806b, and the conductive film 807 constitute a plurality of electron emission portions 805. The conductive film 807 is made of, for example, palladium oxide (PdO), and the gap 808 is formed by forming after forming the conductive film 807.

  An anode electrode 809 that faces the cathode electrode 806 is formed on the lower surface of the second substrate 802. A lattice-shaped bank portion 811 is formed on the lower surface of the anode electrode 809, and a phosphor 813 is disposed in each downward opening 812 surrounded by the bank portion 811 so as to correspond to the electron emission portion 805. Yes. The phosphor 813 emits fluorescence of any one of red (R), green (G), and blue (B), and each opening 812 has a red phosphor 813R, a green phosphor 813G, and a blue color. The phosphors 813B are arranged in the predetermined pattern described above.

  The first substrate 801 and the second substrate 802 configured as described above are bonded together with a minute gap. In this display device 800, electrons that jump out of the first element electrode 806 a or the second element electrode 806 b that are cathodes through the conductive film (gap 808) 807 are formed on the phosphor 813 formed on the anode electrode 809 that is an anode. When excited, it emits light and enables color display.

  Also in this case, as in the other embodiments, the first element electrode 806a, the second element electrode 806b, the conductive film 807, and the anode electrode 809 can be formed using a droplet discharge device, and each color The phosphors 813R, 813G, and 813B can be formed using a droplet discharge device.

  The first element electrode 806a, the second element electrode 806b, and the conductive film 807 have the planar shape shown in FIG. 23A, and when these are formed, as shown in FIG. In addition, the bank portion BB is formed (photolithographic method), leaving portions where the first element electrode 806a, the second element electrode 806b, and the conductive film 807 are previously formed. Next, after the first element electrode 806a and the second element electrode 806b are formed in the groove portion constituted by the bank portion BB (inkjet method using a droplet discharge device), and the solvent is dried to form a film. Then, a conductive film 807 is formed (an inkjet method using a droplet discharge device). Then, after forming the conductive film 807, the bank portion BB is removed (ashing peeling process), and the process proceeds to the above forming process. As in the case of the organic EL device described above, it is preferable to perform a lyophilic process on the first substrate 801 and the second substrate 802 and a lyophobic process on the bank portions 811 and BB.

  As other electro-optical devices, devices such as metal wiring formation, lens formation, resist formation, and light diffuser formation are conceivable. Various electro-optical devices can be efficiently manufactured by using the above-described droplet discharge device for manufacturing various electro-optical devices (devices).

It is an external appearance schematic diagram of the droplet discharge apparatus which concerns on this embodiment. It is an upper surface schematic diagram of the droplet discharge device concerning this embodiment. It is a schematic diagram of the droplet discharge device viewed from the sub-scanning direction. It is a schematic diagram of the droplet discharge device viewed from the main scanning direction. It is explanatory drawing in a series of drawing processes of a droplet discharge apparatus. It is a flowchart explaining a color filter manufacturing process. (A)-(e) is a schematic cross section of the color filter shown to the manufacturing process order. It is principal part sectional drawing which shows schematic structure of the liquid crystal device using the color filter to which this invention is applied. It is principal part sectional drawing which shows schematic structure of the liquid crystal device of the 2nd example using the color filter to which this invention is applied. It is principal part sectional drawing which shows schematic structure of the liquid crystal device of the 3rd example using the color filter to which this invention is applied. It is principal part sectional drawing of the display apparatus which is an organic electroluminescent apparatus. It is a flowchart explaining the manufacturing process of the display apparatus which is an organic electroluminescent apparatus. It is process drawing explaining formation of an inorganic bank layer. It is process drawing explaining formation of an organic substance bank layer. It is process drawing explaining the process in which a positive hole injection / transport layer is formed. It is process drawing explaining the state in which the positive hole injection / transport layer was formed. It is process drawing explaining the process in which a blue light emitting layer is formed. It is process drawing explaining the state in which the blue light emitting layer was formed. It is process drawing explaining the state in which the light emitting layer of each color was formed. It is process drawing explaining formation of a cathode. It is a principal part disassembled perspective view of the display apparatus which is a plasma type display apparatus (PDP apparatus). It is principal part sectional drawing of the display apparatus which is an electron emission apparatus (FED apparatus). It is the top view (a) around the electron emission part of a display apparatus, and the top view (b) which shows the formation method.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Droplet discharge apparatus 2 ... Drawing apparatus 4 ... Discharge material apparatus 10 ... Work stage 11 ... Discharge inspection unit 12 ... Flushing unit 13 ... Maintenance unit 15 ... Color mixing inspection unit 16 ... Alignment camera 25 ... Head unit 26 ... Head movement Means 27: Head accessory device 28 ... Auxiliary moving means 30 ... Functional droplet discharge head 35 ... Main scanning moving means 36 ... Sub-scanning moving means 45 ... Functional liquid supply tube 46 ... Wiring cable 75 ... Transfer robot 76 ... Robot moving means W ... Work

Claims (12)

While moving a plurality of functional liquid droplet ejection heads of an ink jet system that introduce functional liquids of different colors to the work in the main scanning direction, functional liquid droplets are ejected from the plurality of functional liquid droplet ejection heads for different colors. Drawing means for drawing;
The work stage where the work is set, and
A liquid droplet ejection apparatus, comprising: a color mixing inspection unit that faces a work immediately after drawing set on the work stage and inspects a color mixture of an image drawn on the work. The color mixture inspection means includes an inspection camera that inspects the color mixture of the image while imaging the workpiece in the main scanning direction;
The droplet discharge device according to claim 1, further comprising a camera moving unit that moves the inspection camera in a main scanning direction.   3. The movement locus by the camera moving means and the inspection camera as viewed from a work is located outside the movement locus by the drawing means including the plurality of functional liquid droplet ejection heads. The droplet discharge device according to 1. A control means for controlling the drawing means and the camera moving means;
4. The droplet discharge apparatus according to claim 3, wherein the control unit moves the inspection camera after a main scan of the plurality of functional droplet discharge heads serving as a final pass. The work stage is composed of a pair of fixedly arranged in the main scanning direction,
5. A discharge material means for performing a discharge material for the workpiece on the other side while drawing on the workpiece on the one side with respect to the pair of workpiece stages, further comprising: The droplet discharge device according to 1. Each work stage has a backlight that illuminates the work from below;
6. The liquid droplet ejection apparatus according to claim 1, wherein the color mixing inspection unit receives the light transmitted through the workpiece and performs a color mixing inspection. Each of the work stages has a plurality of lift-up pins that lift up the work from the surface of the stage when the work is supplied with the material.
The droplet discharge device according to claim 6, wherein the plurality of lift-up pins and the surface plate of the work stage are made of a translucent material. While moving a plurality of functional liquid droplet ejection heads of an ink jet system in which functional liquids of different colors are introduced to two works set side by side in the main scanning direction with a gap, the plurality of functional liquids A drawing means for alternately drawing by color by discharging functional droplets from a droplet discharge head;
A method for controlling a droplet discharge device, comprising: a color mixture inspection unit that inspects a color mixture of an image that moves while imaging in the main scanning direction and that is a drawing result for each workpiece after drawing,
Droplet ejection characterized by inspecting the color mixture of the image by moving the color mixture inspection means so as to follow the main scan of the plurality of functional liquid droplet ejection heads as the final pass for each workpiece Control method of the device.   9. The method of controlling a droplet discharge device according to claim 8, wherein the drawing is performed by the main scanning starting from an intermediate position between the two works and over the even number of passes.   8. A method of manufacturing an electro-optical device, wherein the droplet discharge device according to claim 1 is used to form a film forming portion with functional droplets on the workpiece.   An electro-optical device using the droplet discharge device according to claim 1, wherein a film forming portion is formed by functional droplets on the workpiece.   An electronic apparatus comprising the electro-optical device manufactured by the method for manufacturing the electro-optical device according to claim 10 or the electro-optical device according to claim 11.

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